#ifdef _WIN32
#pragma warning(disable:4786)
#endif
/*
 **     Query.h
 **
 **     Published / author: 2005-08-12 / grymse@alhem.net
 **/

/*
 * Copyright (C) 2001-2006 Anders Hedstrom
 * 
 * This program is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along 
 * with this program; if not, write to the Free Software Foundation, Inc., 
 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 
 */

#ifndef _QUERY_H_SQLITE
#define _QUERY_H_SQLITE

#include <string>
#include <map>
#ifdef WIN32
typedef unsigned __int64 uint64_t;
typedef __int64 int64_t;
#else
#include <stdint.h>
#endif


#ifdef SQLITEW_NAMESPACE
namespace SQLITEW_NAMESPACE {
#endif


/** SQL Statement execute / result. */
    class Query {
      public:
	/** Constructor accepting reference to database object. */
	Query(Database & dbin);
	/** Constructor accepting reference to database object
		and query string to execute. */
	Query(Database & dbin, const std::string & sql);
	~Query();

	/** Check if database object is connectable. */
	bool Connected();
	/** Return reference to database object. */
	 Database & GetDatabase() const;
	/** Return string containing last query executed. */
	const std::string & GetLastQuery();

	/** execute() returns true if query is successful,
		does not store result. */
	bool execute(const std::string & sql);
	/** Execute query and store result. */
	sqlite3_stmt *get_result(const std::string & sql);
	/** Free stored result, must be called after get_result() before calling 
		execute()/get_result() again. */
	void free_result();
	/** Fetch next result row.
		\return false if there was no row to fetch (end of rows) */
	bool fetch_row();
	/** Get id of last insert. */
	sqlite_int64 insert_id();
	/** Returns 0 if there are no rows to fetch. */
	long num_rows();
	/** Last error string. */
	 std::string GetError();
	/** Last error code. */
	int GetErrno();

	/** Execute query and return first result as a string. */
	const char *get_string(const std::string & sql);
	/** Execute query and return first result as a long integer. */
	long get_count(const std::string & sql);
	/** Execute query and return first result as a double. */
	double get_num(const std::string & sql);

	/** Check if column x in current row is null. */
	bool is_null(int x);

	/** Return column named x as a string value. */
	const char *get_str(const std::string & x);
	/** Return column x as a string value. */
	const char *get_str(int x);
	/** Return next column as a string value - see rowcount. */
	const char *get_str();

	/** Return column named x as a long integer. */
	long getval(const std::string & x);
	/** Return column x as a long integer. */
	long getval(int x);
	/** Return next column as a long integer - see rowcount. */
	long getval();

	/** Return column named x as an unsigned long integer. */
	unsigned long getuval(const std::string & x);
	/** Return column x as an unsigned long integer. */
	unsigned long getuval(int x);
	/** Return next column as an unsigned long integer. */
	unsigned long getuval();

	/** Return column named x as a 64-bit integer value. */
	int64_t getbigint(const std::string & x);
	/** Return column x as a 64-bit integer value. */
	int64_t getbigint(int x);
	/** Return next column as a 64-bit integer value. */
	int64_t getbigint();

	/** Return column named x as an unsigned 64-bit integer value. */
	uint64_t getubigint(const std::string & x);
	/** Return column x as an unsigned 64-bit integer value. */
	uint64_t getubigint(int x);
	/** Return next column as an unsigned 64-bit integer value. */
	uint64_t getubigint();

	/** Return column named x as a double. */
	double getnum(const std::string & x);
	/** Return column x as a double. */
	double getnum(int x);
	/** Return next column as a double. */
	double getnum();

      private:
	/** Hide the copy constructor. */
	 Query(const Query & q):m_db(q.GetDatabase()) {
	}
	/** Hide the assignment operator. */
	    Query & operator=(const Query &) {
	    return *this;
	}
	/** Print current result to stdout. */ void ViewRes();
	/** Print error to debug class. */
	void error(const std::string &);
	Database & m_db;	// /< Reference to database object
	Database::OPENDB * odb;	// /< Connection pool handle
	sqlite3_stmt *res;	// /< Stored result
	bool row;		// /< true if fetch_row succeeded
	short rowcount;		// /< Current column pointer in
	// result
	std::string m_tmpstr;	// /< Used to store result in get_string() 
	// 
	// call
	std::string m_last_query;	// /< Last query executed
	int cache_rc;		// /< Cached result after call to
	// get_result()
	bool cache_rc_valid;	// /< Indicates cache_rc is valid
	int m_row_count;	// /< 0 if get_result() returned
	// no rows
	// 
	std::map < std::string, int >m_nmap;	// /< map translating
	// column names to index
	int m_num_cols;		// /< number of columns in result
    };


#ifdef SQLITEW_NAMESPACE
}				// namespace SQLITEW_NAMESPACE {
#endif

#endif				// _QUERY_H
